At my 5,000 mi service I switched to 20W50 full Syn, getting into neutral is a breeze, my bike shifts so much better and the engine noise has all but diminished. I'm very happy and will continue doing this with each change. However (there always seems to be one of those) I'm getting the dreaded lower dash buzz. I grabbed it the other day while riding and it stopped. I have made a fix for it in lieu of using tie straps. Some left over rubber wedges with adhesive backs from heel inserts that go in my shoes are the key for me. Another poor mans fix.